Try to source a "Dash Panel" from HASS or aftermarket shops. If you are able to get it, then any 2DIN HU can fit perfectly in your Xcent.
The dash panel is a piece of the dashboard, same in colour, which hides the gap between the HU's edges and dashboard edges. It is also called a dash kit.
EDIT - If you have the base variant, your car will already come with the dash kit. Directly install the HU. Do post a picture of your car's centre console for a better idea.